AtCoder Quiz

AtCoder

IDabc217_b

Time2000ms

Memory256MB

Difficulty—

AtCoder currently holds four series of regular contests: `ABC`, `ARC`, `AGC`, and `AHC`. What is the series of regular contests currently held by AtCoder in addition to $S_1$, $S_2$, and $S_3$? ## Constraints * Each of $S_1$, $S_2$, and $S_3$ is `ABC`, `ARC`, `AGC`, or `AHC`. * $S_1$, $S_2$, and $S_3$ are pairwise different. ## Input Input is given from Standard Input in the following format: $S_1$ $S_2$ $S_3$ [samples]

Samples

Input #1

ARC
AGC
AHC

Output #1

ABC

Given in input are `ARC`, `AGC`, and `AHC`. The rest is `ABC`.

Input #2

AGC
ABC
ARC

Output #2

AHC

API Response (JSON)

{
  "problem": {
    "name": "AtCoder Quiz",
    "description": {
      "content": "AtCoder currently holds four series of regular contests: `ABC`, `ARC`, `AGC`, and `AHC`. What is the series of regular contests currently held by AtCoder in addition to $S_1$, $S_2$, and $S_3$?",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc217_b"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "AtCoder currently holds four series of regular contests: `ABC`, `ARC`, `AGC`, and `AHC`.\nWhat is the series of regular contests currently held by AtCoder in addition to $S_1$, $S_2$, and $S_3$?\n\n## Co...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

Full JSON Raw Segments